Henry Daly fulfilled an ambition by saddling Quentin Collonges to win the William Hill Grimthorpe Chase at Doncaster.
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Despite hailing from Shropshire, Daly has fired a few arrows at the perceived Grand National trial without success.
It took a leap of faith to fancy the grey but he was sent off at 15/2 under Andrew Tinkler, who gave him a very positive ride from the front.
After a few breathtaking leaps on the second circuit, his pursuers were soon under pressure and only Mr Moss emerged as a serious threat.
Paul Moloney had worked wonders to get his awkward ride into contention but when he drew level on the run-in, the result looked inevitable.
Quentin Collonges was not to be denied, though, and pulled out more for a half-length success.
"I've been trying to win this race for a while," said Daly.
"Possol was favourite three years ago but nearly fell at the first and second.
"He's tiny but tough, a pleasure to train and as hard as nails.
"The tongue strap helped today and I'd imagine he'll have another entry in the Scottish National. He was well fancied in it last year.
"He needs a trip, good ground and to go left."
Evan Williams said of Mr Moss: "He's been produced to win but he's not an easy horse to ride.
"He'll have an entry in the Scottish National and Ayr should suit."
Jockey of the third home Beneficial Reform, James Banks, was banned for four days (March 16-19) for using his whip above the permitted level.
The Paul Nicholls-trained Join Together was hampered by the early fall of Night In Milan and never got back into contention.
Nicholls said afterwards: "We've come here for a run to get him ready for the National and we never really got one, but we'll give him a good school at home and I'm sure he'll be all right."